18324156 has 24 divisors (see below), whose sum is σ = 43459024. Its totient is φ = 6007680.

The previous prime is 18324101. The next prime is 18324179. The reversal of 18324156 is 65142381.

It is a super-2 number, since 2×18324156² = 671549386224672, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11785 + ... + 13248.

Almost surely, 2^18324156 is an apocalyptic number.

It is an amenable number.

18324156 is an abundant number, since it is smaller than the sum of its proper divisors (25134868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18324156 is a wasteful number, since it uses less digits than its factorization.

18324156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25101 (or 25099 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 18324156 is about 4280.6723770922. The cubic root of 18324156 is about 263.6379909675.

The spelling of 18324156 in words is "eighteen million, three hundred twenty-four thousand, one hundred fifty-six".